If you're cooking for a large crowd you're better off getting two smaller birds. Instead of one massive one with a bigger turkey it's going to take so long to cook. By the time the whole bird is cooked through the outside is going to be almost inedible. The safety concerns.Don't to buy turkeys early because the refrigerators at the grocery store are much colder than what you have at home. If your turkeys frozen there's two ways to defrost it.